Hydrostatic thrust bearing system
AssigneeCellwood Machinery AB
InventorThomas Arvidsson
Life of this patent
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Abstract
A hydrostatic thrust bearing system characterized in that the hydrostatic bearings are axially movable and are held urged against the pressure plate in mutually opposite directions by hydraulic pressure created in a chamber associated with a respective bearing; and in that a servo valve is provided for co-action with an axial-position sensor for controlling the amount of hydraulic fluid fed to a respective chamber and also to control the hydraulic pressure acting on a respective bearing such as to take-up axial loads which vary in magnitude and direction.
Claims10
A hydrostatic thrust bearing system for a radially journalled axle or shaft (1) provided with a pressure plate or collar (1a), the thrust bearing system having an external configuration which enables the system to be mounted around the rotatable axle (1) and including a hydrostatic thrust bearing (2, 3;
- 2'a, 3'a) on each side of the pressure plate (1a), and in which system each of the thrust bearings incorporates at least one oil pocket (2a, 3a;
- 2'a, 3'a), to which hydraulic fluid is fed from a hydraulic fluid source, characterized in that the hydrostatic bearings (2, 3;
- 2', 3') are axially movable and are held urged against the pressure plate (1a) in mutually opposite directions by means of hydraulic pressure created in a chamber associated with a respective bearing;
- and in that means, is provided for coaction with an axial-position sensing means (10b) for controlling the amount of hydraulic fluid fed to a respective chamber and also to control the hydraulic pressure acting on a respective bearing such as to take-up axial loads which vary in magnitude and direction.
Dependencies are inferred from the claim text.